FSE Instrument Interfaces
1065.6016.12 8.23 E-15
Measurement Converters (PROBE CODE)
The PROBE CODE connector is used for supplying power to measurement converters and the providing
the correct conversion factor coding to the FSE. Using it, the conversion factors for high-impedance
probes, current converters and antennas can be encoded in 10dB steps. In addition, the quantity to be
measured (field strength, current and voltage) is also passed to the FSE. Active converters can be
supplied with ±10 V via the PROBE CODE connector. The following R&S accessories are deliverable
with the applicable coding:
· Wide band dipole 20...80 MHz HUF-Z2
· HF current converter 100 kHz..30 MHz ESH2-Z1
· VHF current converter 20...300 MHz ESV-Z1
· Current converter 20 Hz...100 MHz EZ-17
· Preamplifier 20...1000 MHz ESV-Z2.
The pins of the PROBE CODE connector are assigned as follows:
Pin Signal
A ground
B +10 V, max. 50 mA
C µV/m (elec. field strength)
DµA
E 10 dB
F 20 dB
G 40 dB
H 80 dB
K - 10 V, max. 50 mA
M factor sign inversion
Fig 8-7 Pin assignment for the 12-pin Tuchel connector.
A 12-pin connector is used for coding (manufacturer: Tuchel, R&S part number 0018.5362.00, Tuchel
type number: T3635/2). The input pins for implementing the code are connected to ground.
Example: An antenna for measurement of the electromagnetic field strength has an antenna factor of
10 dB, i.e., a field strength of 10 dBµV/m produces a voltage at the RF input of 0 dBµV.
-> Pins C and E are connected to ground.
Probe Connector (PROBE POWER)
To allow the connection of probes, the FSE provides the PROBE POWER power connector. It delivers
the power supply voltages +15 V and -12,6 V and ground.
The connector is also suited for powering the high-impedance probes from Hewlett Packard.
Pin Signal
1GND
2 -12,6 V; max 150 mA
1
23
3 +15 V; max 150 mA
A
B
C
D
E
F
G
H
J
K
L
M
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